Abstract: The disclosure details of the implementation of an APPARATUSES, METHODS AND SYSTEMS FOR A PERIODIC AUCTION RESET SECURITIES OPTIMIZATION ENGINE (hereinafter “OPTIMIZER”). The disclosure teaches an OPTIMIZER, which provides dynamic management of one or more portfolios of securities, in particular, portfolios of Periodic Auction Reset Securities (PARS). The OPTIMIZER allows for the specification of rules for investor accounts by which optimization of this type of portfolio may occur. The OPTIMIZER allows financial institutions or other wealth management entities to easily maintain and invest in PARS holdings for multiple accounts. In one implementation, the OPTIMIZER provides for the maintenance of a large number of separate accounts that contain only PARS. In one embodiment, the OPTIMIZER centralizes the maintenance of PARS positions. In another embodiment, the OPTIMIZER allows management of central PARS accounts in line with guidelines specified in one or more account profiles.